Two strong to severe thunderstorms moved through Lake St Clair.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DTX wrote it up.
Two strong to severe thunderstorms moved through Lake St Clair.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Detroit, MI wrote its last area forecast discussion before the first event at Jun 17, 3:01 PM EST, 1 hour 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 401 PM EDT MON JUN 17 2013 .SHORT TERM...THIS AFTERNOON AND TONIGHT MAIN CONCERN FOR THE SHORT TERM WILL BE CONVECTION INITIATING THIS AFTERNOON AND PERSISTING INTO EVENING AS LIFT/FORCING FROM SHORTWAVE NOW SHIFTING INTO WESTERN GREAT LAKES PROVIDES SUPPORT FOR ACTIVITY THAT FIRES ALONG SURFACE FRONT DRAPED FROM THE SAGINAW VALLEY INTO THE THUMB REGION. LEAD SURFACE TROUGH NEAR THE MICHIGAN/OHIO STATE LINE WILL CUT OFF THE REGION FROM THE BEST BOUNDARY LAYER MOISTURE/INSTABILITY...BUT STRONG SOLAR INSOLATION DURING THE REMAINDER OF THE AFTERNOON WILL ALLOW FOR MODEST INSTABILITY EVEN IN AREAS WHERE SURFACE DEW POINTS WILL BE LIMITED TO THE MID/UPPER 50S. GIVEN BULK WIND SHEAR VALUES OF 45 KNOTS IN STRONG WEST/NORTHWEST FLOW REGIME...EXPECT SOME DEGREE OF ORGANIZATION TO THE SHOWERS/THUNDERSTORMS THAT DEVELOP AS THE INFLUENCE OF THE UPPER LEVEL WAVE INCREASES STEADILY DURING PEAK HEATING/INSTABILITY OF THE AFTERNOON. THE ACTIVITY WILL ALSO BE AIDED BY INCREASE LOW LEVEL CONVERGENCE AS NORTHEAST FLOW FROM DEVELOPING LAKE BREEZE FROM LAKE HURON WILL AUGMENT THE PUSH OF THE SYNOPTIC FRONTAL BOUNDARY SOUTHWARD THROUGH THE CWA. STEEP LAPSE RATES THROUGH AT LEAST 650 MB IN WELL MIXED NORTHWEST FLOW WILL PROVIDE A FAVORABLE ENVIRONMENT FOR GUSTY WINDS WITHIN THUNDERSTORM DOWNDRAFTS. ALSO...RELATIVELY LOW FREEZING LEVEL WITH LACK OF ANY SIGNIFICANT UPPER RIDGING OVER AREA WILL BE FAVORABLE FOR SOME HAIL DEVELOPMENT. SO...AS THE PREVIOUS FORECAST OUTLINED NICELY...THERE WILL BE A CHANCE FOR SEVERAL SEVERE STORMS FROM THIS AFTERNOON INTO THE EARLY EVENING AS ACTIVITY GRADUALLY EXPANDS AS INSTABILITY MAXES OUT WITH LATE DAY HEATING. WHILE THE MAIN WINDOW FOR ACTIVE STORMS WILL EXIST THROUGH 00Z-01Z...LINGERING CONVECTION WILL MOST LIKELY PERSIST OVER SOME PARTS OF THE AREA INTO THE 04Z-06Z TIME FRAME AS LIFT FROM THE TRAILING ENTRANCE REGION OF UPPER JET SHIFTS OVER THE AREA. ANY REMAINING ACTIVITY WILL END QUICKLY AFTER MIDNIGHT AS FRONTAL BOUNDARY PUSHES SOUTH OF THE AREA...AUGMENTED BY THE AGEOSTROPHIC CIRCULATION ON THE TAIL END OF THE UPPER JET. BUILDING HIGH PRESSURE WILL BRING RELATIVELY COOL TEMPERATURES INTO MUCH OF THE CWA...WITH LOW TEMPERATURES NEAR 50 OVER THE NORTHERN CWA...AND MID 50S FOR A GOOD PORTION OF THE AREA. && .LONG TERM...TUESDAY THROUGH SUNDAY AN ANTICYCLONE OF CANADIAN ORIGIN WILL BECOME ESTABLISHED OVER THE GREAT LAKES IN WELL ORGANIZED CONFLUENCE ALOFT. THE SURFACE HIGH WILL MAINTAIN A CENTERING OVER LAKE HURON THROUGH WEDNESDAY NIGHT. AS THIS SURFACE HIGH PASSES EAST NWP SUGGESTS A STRONG SURFACE RIDGE WILL THEN PERSIST OVER THE LAKE AGGREGATE THROUGH FRIDAY. A FINE STRETCH OF EARLY SUMMER WEATHER IS EXPECTED WITH CONDITIONS THAT ARE NOTABLY COOL. SURFACE TEMPERATURES TUESDAY SHOULD FAIL TO CLIMB OUT OF THE 60S FOR THE THUMB...WITH READINGS IN THE HEAT ISLAND ABLE TO REACH THE MID 70S DUE TO FULL JUNE INSOLATION. TUESDAY NIGHT WILL BE DOWNRIGHT COOL WITH GUIDANCE SUGGESTING WIDESPREAD LOWER TO MIDDLE 40S WHICH WILL BE SOME 15 TO 17 DEGREES COOLER THAN NORMAL. RETURN FLOW WILL EVENTUALLY COLLAPSE UPON THE REGION BY THIS WEEKEND. CLEAN SHOWALTER INDICES ANALYSIS SUGGESTS THAT A THERMODYNAMIC PROFILE CONDUCIVE FOR PRECIPITATION WILL ARRIVE ON SATURDAY. IT IS AT THIS TIME THAT SOUTHEASTERN MICHIGAN MAY BECOME IN LINE WITH POSSIBLE MCS TRACK THAT WILL BE CRESTING AN INBOUND MID TO UPPER LEVEL RIDGE. && .MARINE... APPROACHING SHORTWAVE WILL INDUCE WEAK SURFACE LOW PRESSURE ALONG FRONTAL BOUNDARY DRAPED THROUGH THE CENTRAL GREAT LAKES. SHOWER AND THUNDERSTORM DEVELOPMENT WILL INCREASE AS THIS PROCESS TAKES PLACE DURING PEAK HEATING LATE TODAY...WITH CONVECTION PERSISTING INTO THIS EVENING AS JET SUPPORT SHIFTS OVERHEAD. NORTHEAST FLOW WILL INCREASE OVERNIGHT INTO EARLY TUESDAY IN THE WAKE OF THIS SYSTEM...BUT ONLY TOP OUT AROUND 15 KNOTS...SO WHILE WAVES WILL BUILD OVER SOUTHERN LAKE HURON IN PARTICULAR...EXPECT CONDITIONS TO REMAIN UNDER SMALL CRAFT ADVISORY CRITERION FOR THE NEARSHORE ZONES...PEAKING AT 2-4 FEET OVER FAR SOUTHERN LAKE HURON. ONCE THIS SLIGHTLY ENHANCED FLOW SUBSIDES BY MIDDAY TUESDAY...HIGH PRESSURE WILL BRING FAVORABLE MARINE CONDITIONS FOR THE REMAINDER OF THE WEEK AS WINDS BECOME LIGHT AND VARIABLE. && .AVIATION...ISSUED 100 PM EDT MON JUN 17 2013 //DISCUSSION... COLD FRONT DRAPED NEAR MBS TO LDM HAS STALLED OUT SOME WITH -TSRA ORIENTED ALONG AND AHEAD OF THE FRONT. SURFACE OBS IN NORTHERN MI HAVE CONFIRMED THAT INDICATE THE ACTIVITY IS HIGH-BASED WITH CLOUD BASES NEAR 5-7.5K FEET. THIS WILL KEEP THE TAFS IN VFR MODE THROUGH THE FORECAST...DESPITE THE POSSIBILITY FOR SHORT PERIODS OF VIS DROPPING TO 5SM OR LESS WITHIN STRONGER STORMS. COLD AND DRY ADVECTION COUPLED WITH A TIGHT PRES GRADIENT INTO TUES WILL BRING WIND GUSTS OVER 20KT. FOR DTW...THE PROBABILITY FOR THUNDERSTORMS TO IMPACT THE TERMINAL WITH THE COLD FRONTAL PASSAGE CURRENTLY REMAINS TOO LOW TO INCLUDE IN THE TAFS. FROPA LOOKS TO OCCUR AROUND 01-03Z. //DTW THRESHOLD THREATS... * LOW CONFIDENCE IN CEILINGS BELOW 5000 FT THIS AFTERNOON THROUGH TONIGHT. * LOW CONFIDENCE IN THUNDERSTORM POTENTIAL LATE THIS AFTERNOON THROUGH TONIGHT. && .DTX WATCHES/WARNINGS/ADVISORIES... MI...NONE. LAKE HURON...NONE. LAKE ST CLAIR...NONE. MI WATERS OF LAKE ERIE...NONE. && SHORT TERM...DG LONG TERM....CB MARINE.......DG AVIATION.....MM YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 349 PM EDT MON JUN 17 2013 MIZ053-060>063-068>070-075-076-082-083-180745- SAGINAW-SHIAWASSEE-GENESEE-LAPEER-ST. CLAIR-LIVINGSTON-OAKLAND- MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 349 PM EDT MON JUN 17 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON INTO EARLY EVENING AS A COLD FRONT SLOWLY MOVES THROUGH THE AREA. ANY STORMS THAT DEVELOP WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 60 MPH AND HAIL UP TO ONE INCH IN DIAMETER. ISOLATED STORMS THIS AFTERNOON CAPABLE OF WIND GUSTS TO 70 MPH...GOLFBALL SIZED HAIL AND POSSIBLY AN ISOLATED TORNADO...MAINLY NORTH AND EAST OF THE I 75 CORRIDOR. STORM MOTION WILL BE NORTHWEST TO SOUTHEAST AT 35 MPH. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL MOST LIKELY NOT BE NEEDED DUE TO THE ISOLATED NATURE OF THE SEVERE WEATHER POTENTIAL. MIZ047>049-054-055-180745- MIDLAND-BAY-HURON-TUSCOLA-SANILAC- 349 PM EDT MON JUN 17 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE WILL BE A CHANCE OF THUNDERSTORMS INTO THIS EVENING WITH ISOLATED SEVERE THUNDERSTORMS POSSIBLY PRODUCING WIND GUSTS TO 60 MPH AND HAIL TO ONE INCH IN DIAMETER. STORMS WILL MOVE TO THE SOUTHEAST AT 35 MPH AS A COLD FRONT SLOWLY SHIFTS THROUGH THE REGION. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-180745- ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT BEYOND 5 NM OFF SHORE- LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND 5NM OFF SHORE- LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF SHORE- OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI- PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI- PORT SANILAC TO PORT HURON MI- LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE- LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE- LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE- 349 PM EDT MON JUN 17 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE HURON AND LAKE ST CLAIR. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON INTO EARLY EVENING AS A COLD FRONT SLOWLY MOVES THROUGH THE AREA. ANY STORMS THAT DEVELOP WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 60 MPH AND HAIL UP TO ONE INCH IN DIAMETER. STORM MOTION WILL BE NORTHWEST TO SOUTHEAST AT 35 MPH. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. DG YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
506 PM EDT MON JUN 17 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0440 PM TSTM WND DMG 2 ENE OXFORD 42.83N 83.22W
06/17/2013 OAKLAND MI TRAINED SPOTTER
2.5 FOOT DIAMETER TREE UPROOTED WITH DOWNED POWER LINES
BLOCKING ROAD. RADAR ESTIMATED TIME.
&&
SCHULTZPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
511 PM EDT MON JUN 17 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0410 PM TSTM WND DMG 5 ESE DAVISON 43.01N 83.42W
06/17/2013 LAPEER MI TRAINED SPOTTER
TREES SNAPPED AND UPROOTED ALONG WITH DAMAGE ROOFS.
&&
SCHULTZPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
518 PM EDT MON JUN 17 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0358 PM TSTM WND DMG 4 SE DAVISON 42.99N 83.46W
06/17/2013 GENESEE MI TRAINED SPOTTER
TREE SNAPPED IN HALF
&&
SCHULTZPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
520 PM EDT MON JUN 17 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0456 PM TSTM WND DMG 1 WSW ROMEO 42.80N 83.02W
06/17/2013 MACOMB MI TRAINED SPOTTER
LARGE TREE DOWN ON HOUSE WITH DOWNED POWER LINES
&&
SCHULTZSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 520 PM EDT MON JUN 17 2013 MIZ047-172200- MIDLAND- 520 PM EDT MON JUN 17 2013 ...SIGNIFICANT WEATHER ADVISORY... AT 517 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 12 MILES SOUTHWEST OF COLEMAN...MOVING SOUTHEAST AT 40 MPH. NICKEL SIZE HAIL...WINDS UP TO 50 MPH...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... OIL CITY BY 530 PM EDT... PLEASANT VALLEY BY 535 PM EDT... GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE OBJECTS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. SF/RBP
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
522 PM EDT MON JUN 17 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0323 PM TSTM WND DMG 3 WSW FOSTERS 43.28N 83.96W
06/17/2013 SAGINAW MI TRAINED SPOTTER
18 INCH DIAMETER TREE DOWN ON HOUSE.
&&
SCHULTZThe Detroit radar (KDTX), 71 km away, was scanning. The volume nearest the first event began at 21:26 UTC.
2 marine thunderstorm wind. Local standard time, as filed.
A thunderstorm destroyed a boathouse along the Eastern Lake St. Clair Shoreline.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake St. Clair in 2013Every state in 2013This day in weather history
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 461176, 461174.